| 摘要 |
<P>PROBLEM TO BE SOLVED: To make a gaseous fuel in a fuel tank usable even under low pressure. Ž<P>SOLUTION: The fuel tank 43 preserving the gaseous fuel and fuel injection valves 11, 12 of an engine EG using the gaseous fuel as a fuel are connected by a first path 41 and a second path 42. To the first path 41, a pressure reducing valve 50 reducing the pressure of the gaseous fuel from the fuel tank 43 to a prescribed pressure is connected. Besides, a shut-off valve 46 is connected to the second path 42. When the pressure in the fuel tank 43 is not less than the prescribed pressure, the shut-off valve 46 is closed, and the gaseous fuel is supplied to the fuel injection valves 11, 12 through the pressure reducing valve 50. When the pressure in the fuel tank 43 becomes lower than the prescribed pressure, the shut-off valve 46 is opened, and the gaseous fuel is supplied to the fuel injection valves 11, 12 without the interposition of the pressure reducing valve 50. Ž<P>COPYRIGHT: (C)2010,JPO&INPIT Ž
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